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Headaches can be divided into two categories: primary headaches and secondary headaches. Migraine headaches, tension headaches, and cluster headaches are considered primary headaches. Secondary headaches are caused by disease. Headache symptoms vary with the headache type. Over-the-counter pain relievers provide short-term relief for most headaches.

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      Swine Flu Article
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      In This Article
      Dehydration Article
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      • Dehydration pictures
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Terms related to Headache:

  • Pain in the Head